Home / 81,156.17-111,993.42-45,346.40

Finding the Fourth Proportional to 81,156.17, 111,993.42 and 45,346.40

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Solution

The fourth proportional to 81,156.17, 111,993.42 and 45,346.40 is: 62,576.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,156.17 : 111,993.42 = 45,346.40 : x
  2. Step 2: Convert to fraction form
    81,156.17/111,993.42 = 45,346.40/x
  3. Step 3: Cross multiply
    81,156.17x = 111,993.42 × 45,346.40
  4. Step 4: Simplify right side
    81,156.17x = 5,078,497,860.72
  5. Step 5: Solve for x
    x = 5,078,497,860.72/81,156.17
  6. Step 6: Final answer
    x = 62,576.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.